I'm working with two old computers here. I have an emachines with windows xp on the hard drive and it works fine. But when I stick that hard drive into another tower (an HP that came with Windows ME), all it does is turn on, tells me the hard drive has been detected, beeps once and the screen goes black except for a blinking cursor at the top. I've used a 30-day trial of XP on this HP machine before, so I can't figure out why the emachines hard drive won't work in the HP machine. I've already tried playing with the jumper with no luck.